From a total population of 93,108, Gallatin County has a median age of 33. The average age of males, in Gallatin County, is 32.6 while the average age of females is 33.5. When you compare this to median age of Montana, Gallatin County is 6.8 years younger.
The median income of individuals, in Gallatin County, is $29,468 while the average household income is $54,298. When comparing the median income of people living in Gallatin County to the rest of Montana, the average income in Gallatin County is $3,491 more.